? japan continues to reel from a catastrophic earthquake and tsunami. millions are without shelter, food and electricity, as the death toll is expected to rise. rescue workers arepe dlytees trying to find survivors and dig out victims. and as a second hydrogen explosion rocks the fukushima daiichi nuclear plant, devastating the structure of one reactor and exposing the fuel rods of another, the fear of further explosions continues to grow. japan's first earthquake in history has slammed the world's third largest economy. sending the stock exchange plunging $300 billion in value. president obama reaffirmed america's support for japan. >> the united states will continue to offer any assistance we can as japan recovers from multiple disasters. >> reporter: tensions throughout the middle east are high as gadhafi-backed forces launch air strikes on two key libyan towns, forcing rebels to retreat eastward. and new protests against the ruling family in bahrain. police fired tear gas and water cannons in demonstrators in one of the most violent confrontation. this year's honorees, alice cooper,